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Xenon 600.1 and 12" PG RSDC wiring question and optimal
Posted: Fri Jul 24, 2009 7:12 pm
by deadlift425
Had the rsdc woofer for a bit, just needed an amp. Figure I would stick with the PG amp for the sub at least so I picked up the Xenon. My question for you guys since I have the dual 4 ohm sub, should I wire it to 2 ohms or 8? I know the 4-1 ohm load makes 600 watts with increased heat by going down. Just wondering what the optimal setup would be without going crazy on gains?
Also, on the box, thinking of doing sealed. I calculate the volume based on basic volume formula (length, width, and height divided by 1728(thanks smgreen).
Thanks.
Posted: Fri Jul 24, 2009 9:09 pm
by smgreen20
You'd be alright on 2 ohms w/that amp. Yea it'll run a bit hotter, but I don't think it'll be an issue at all. At 8 ohms I believe that amp will cut in half the power. At 2 ohms (in a review) it actually went up 100 watts at 2 ohm vs 4 ohm.
Divided by 3?????
Internally
Length x width x height (US) = XX inches
XX inches divided by 1728 ( the amount of square inches in a cubic foot)= XX cubic feet.
Example: 32" x 16" x 10" = 5120"
5120 divided by 1728 = 2.962 cubic feet
Posted: Mon Aug 24, 2009 9:31 am
by deadlift425
Thanks. Now trying to find an optimal sealed enclosure size for a civic. Anyone have some basic sizes to start with? Also, does box shape matter when it comes to a trunk?
Thanks,
Aaron
Posted: Mon Aug 24, 2009 10:07 am
by Bfowler
smgreen20 wrote:At 2 ohms (in a review) it actually went up 100 watts at 2 ohm vs 4 ohm.
link or it didnt happen!
but yeah...the amp will be fine playing all day at 2ohms
Posted: Mon Aug 24, 2009 1:13 pm
by smgreen20
Posted: Mon Aug 24, 2009 10:39 pm
by Bfowler
i still question his methods!
Posted: Wed Aug 26, 2009 7:50 pm
by deadlift425
thread jackers lol.
Anyways, mocked up some dimesions using 12 volts site. 15x15x13 using 3/4 mdf nets me roughly 1.22 cu. ft. Will brace the inside with fiberglass resin and matting after gluing and screwing.
What do you guys think?
Posted: Wed Aug 26, 2009 8:02 pm
by Bfowler
sounds like you are ready to rock!
also remember that the sub will loosen up quite a bit over the first 10 hours of playtime
Posted: Wed Aug 26, 2009 8:40 pm
by deadlift425
dammit, forget woofer displacement. Now I am at 15x14.5x14.5 and a total of 1.32. After displacement of the woofer(.13), I am at 1.19. Manual says 1.17 so I am in the ball park!!!
Posted: Thu Aug 27, 2009 6:27 am
by stipud
Anywhere within 20%, you shouldn't be able to tell the difference.
If your box is a bit on the small side, I generally recommend 1 pound per cubic foot of polyfill as well.
Posted: Sat Aug 29, 2009 11:42 am
by deadlift425
One last question. What size mounting screws do I need for the rsdc subwoofer?
Posted: Sun Aug 30, 2009 12:01 am
by Bfowler
for big subs like the rsdc you want to go with hurricane nuts and bolts.
they can't quite take a 1/4 so i like these a lot:
http://www.parts-express.com/pe/showdet ... r=081-1080
they hold amazingly well and you never have to worry about the screws stripping. just buy some #8-32 screws at your local hardware store to go with em
Posted: Mon Jan 25, 2010 3:51 pm
by deadlift425
Ok, finally got this thing installed and rocking. Any recommendations as to where the crossover should bet set at on the amp plus the subsonic filter?
And is it necessary to use bass boost or am I better just using the gain on the xenon?
Thanks.
Posted: Mon Jan 25, 2010 3:57 pm
by Bfowler
skip the bass boost for sure. that really taxes your electrical system hard for very little gain.
the "gain" will probably be set high on the xenon because they like about 8+ volts of input signal.
the subsonic can be set about 25, but on that sub really isn't necessarily. it is designed to play VERY low. even on unnaturally low electronically produced notes.
the crossover should be set at a point that allows it to start playing where your fronts leave off. try around 85hz, and work your way down
